Summary

Summary AQA A Level Biology-The general properties of Proteins- Unit 1

0 purchase

Module
Unit 1 - Biological molecules

Institution
AQA

Notes on the general properties of proteins sub-topic within AQA A Level Biology Unit 1- Biological Molecules. These notes contain sub headings with different methods of note taking like tables, images from online videos and concise bullet points.

[Show more]

Preview 2 out of 15 pages

View example

Uploaded on September 7, 2024
Number of pages 15
Written in 2024/2025
Type Summary

biology
aqa
a level
properties
proteins
unit 1
biological
molecules
biological molecules
general properties of protiens

⚪
General properties of proteins

Introducing proteins and amino acids:
Proteins are organic molecules with many important functions.

Structural roles- e.g. muscles- form the structure of tendons

Metabolic roles- e.g. enzymes catalyse reactions

Transport roles- e.g haemoglobin transports oxygen

Made of carbon, hydrogen and oxygen like carbohydrates- but also contain
other elements like nitrogen and sometimes sulphur and phosphorus.

Amino Acids:
The building blocks used to make proteins- monomers.

Polymer of amino acids= protein.
All amino acids have the same basic strucure:

Central carbon (C) atom

General properties of proteins 1

, Bonded to a carboxyl group (-COOH)

An amino (amine) group (-NH2)

A hydrogen group (-H)

And an R group (-R)

Each amino acid (20 different types) has a different R group- everything else is
the same.

💡 Amino acids are the monomer units to make proteins. All amino acids
have the same basic strucutre but with different R groups.

R groups can vary in their:

Size- e.g glycine and lysine (don’t have to learn)

Polarity- polar molecules have an area with a positive charge and an area
with a negative charge.- e.g. Alanine and cysteine.

General properties of proteins 2

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller olivialeather. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £7.16. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

68175 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 15 years now

Start selling